I think I'm going to call them. I like the idea of silver plugs because of their electrical and thermal properties. Of cousre copper has better properties than iridium and the iridiums seem to be a better plug for my car.
I'm going to call Brisk later today and find out why they recommended a non resistor plug for my car. Since I am a sparkplugaholic, I almost have to try something they offer in a silver.
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